MICHAEL A. OBE; GODSPOWER C. ABANUM; INNOCENT C. ELI. Variational Iteration Method for First and Second Order Ordinary Differential Equations using First Kind Chebychev Polynomials. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, [S. l.], v. 4, n. 8, p. 126–131, 2018. DOI: 10.31695/IJASRE.2018.32829. Disponível em: https://ijasre.net/index.php/ijasre/article/view/656. Acesso em: 6 may. 2024.